Finding the Fourth Proportional to 111,858.62, 154,397.48 and 89,354.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111,858.62 : 154,397.48 = 89,354.39 : x
2. Step 2: Convert to fraction form
   111,858.62/154,397.48 = 89,354.39/x
3. Step 3: Cross multiply
   111,858.62x = 154,397.48 × 89,354.39
4. Step 4: Simplify right side
   111,858.62x = 13,796,091,424.18
5. Step 5: Solve for x
   x = 13,796,091,424.18/111,858.62
6. Step 6: Final answer
   x = 123,335.08